This comprehensively updated and expanded revision of the successful second edition continues to provide detailed coverage of the ever-growing range of research topics in vision. In Part I, the treatment of visual physiology has been extensively revised with an updated account of retinal processing, a new section explaining the principles of spatial and temporal filtering which underlie discussions in later chapters, and an up-to-date account of the primate visual pathway. Part II contains four largely new chapters which cover recent (...) psychophysical evidence and computational model of early vision: edge detection, perceptual grouping, depth perception, and motion perception. The models discussed are extensively integrated with physiological evidence. All other chapters in Parts II, III, and IV have also been thoroughly updated. (shrink)

The global array may be a useful concept in studying behavior in a complex environment, especially in the context of dynamical systems theory. However, Stoffregen & Bardy's arguments are weakened by the conflation of sensation and perception, and by the lack of evidence for synergy between stimulus energy arrays; strong evidence places the convergence of sensory stimuli inside the head.

The integrated information theory equates levels of consciousness with the amount of information integrated over the elements that constitute a system. Conscious visual perception provides two observations that contradict the IIT. First, objects are accurately perceived when presented for ≪100 ms during which time no neural integration is possible. Second, an object is seen as an integrated whole and, concurrently, all constituent elements are evident. Because integration destroys information about details, IIT cannot account for perceptual detail preservation.

Though many philosophers of mind have taken an interest in the great developments in the brain sciences, the interest is seldom reciprocated by scientists, who frequently ignore the contributions philosophers have made to our understanding of the mind and brain. In a rare collaboration, a world famous brain scientist and an eminent philosopher have joined forces in an effort to understand how our brain interacts with the world. Does the brain behave as a calculator, combining sensory data before deciding how (...) to act? Or does it behave as an emulator endowed with innate models of the world, which it corrects according to the results of experiences obtained by the senses? The two authors come from very different backgrounds - the philosopher Jean-Luc Petit belongs to the philosophical tradition of Husserlian phenomenology. Alain Berthoz has long been interested in the physiology of action (movement, posture, decision-making, perception, etc.). Drawing on cutting-edge research from the cognitive sciences, the authors have produced a highly original volume showing how phenomenology and physiology can interact to further our understanding of the brain and the mind. (shrink)

In a recent paper, I developed and introduced embodied Rilkean sport-specific knowledge into the current sports knowledge philosophical debate. The existence of embodied Rilkean sport-specific know...

This paper addresses the visual culture of late-19th-century experimental physiology. Taking the case of Johann Nepomuk Czermak as a key example, it argues that images played a crucial role in acquiring experimental physiological skills. Czermak, Emil Du Bois-Reymond and other late-19th-century physiologists sought to present the achievements and perspective of their discipline by way of "immediate visual perception." However, the images they produced and presented for this purpose were strongly mediated. By means of specifically designed instruments, such as (...) the "cardioscope," the "contraction telegraph," and the "frog pistol," and of specifically constructed rooms, so-called "spectatoriums," physiologists trained and controlled the perception of their students before allowing them to conduct experiments on their own. Studying the material culture of physiological image production reveals that technological resources such as telegraphy, photography, and even railways contributed to making physiological facts anschaulich. At the same time, it shows that the more traditional image techniques of anatomy played an important role in physiological lecture halls, especially when it came to displaying the details of vivisection experiments to the public. Thus, the images of late 19th century physiology stood half-way between machines and organisms, between books and instruments. (shrink)

Robert Brain traces the origins of artistic modernism to specific technologies of perception developed in late-nineteenth-century laboratories. Brain argues that the thriving fin-de-siècle field of “physiological aesthetics,” which sought physiological explanations for the capacity to appreciate beauty and art, changed the way poets, artists, and musicians worked and brought a dramatic transformation to the idea of art itself.

In a rare collaboration, a world famous brain scientist and an eminent philosopher have joined forces in an effort to understand how our brain interacts with the world. This is a highly original volume showing how those within phenomenology and physiology can interact to further our understanding of the brain and the mind.

This paper addresses the visual culture of late-19th-century experimental physiology. Taking the case of Johann Nepomuk Czermak (1828-1873) as a key example, it argues that images played a crucial role in acquiring experimental physiological skills. Czermak, Emil Du Bois-Reymond (1818-1896) and other late-19th-century physiologists sought to present the achievements and perspective of their discipline by way of "immediate visual perception (unmittelbare Anschauung)." However, the images they produced and presented for this purpose were strongly mediated. By means of specifically (...) designed instruments, such as the "cardioscope," the "contraction telegraph," and the "frog pistol," and of specifically constructed rooms, so-called "spectatoriums," physiologists trained and controlled the perception of their students before allowing them to conduct experiments on their own. Studying the material culture of physiological image production reveals that technological resources such as telegraphy, photography, and even railways contributed to making physiological facts anschaulich. At the same time, it shows that the more traditional image techniques of anatomy played an important role in physiological lecture halls, especially when it came to displaying the details of vivisection experiments to the public. Thus, the images of late 19th century physiology stood half-way between machines and organisms, between books and instruments. (shrink)

The aim of the present work is to show the roots of the conception of perception as an active process, tracing the history of its development from Plato to modern philosophy. The contributors inquire into what activity is taken to mean in different theories, challenging traditional historical accounts of perception that stress the passivity of percipients in coming to know the external world. Special attention is paid to the psychological and physiological mechanisms of perception, rational and non-rational (...) perception and the role of awareness in the perceptual process. Perception has often been conceived as a process in which the passive aspects - such as the reception of sensory stimuli - were stressed and the active ones overlooked. However, during recent decades research in cognitive science and philosophy of mind has emphasized the activity of the subject in the process of sense perception, often associating this activity to the notions of attention and intentionality. Although it is recognized that there are ancient roots to the view that perception is fundamentally active, the history remains largely unexplored. The book is directed to all those interested in contemporary debates in the fields of philosophy of mind and cognitive psychology who would like to become acquainted with the historical background of active perception, but for historical reliability the aim is to make no compromises. (shrink)

Many of Margaret Cavendish’s criticisms of Thomas Hobbes in the Philosophical Letters (1664) relate to the disorder and damage that she holds would result if Hobbesian pressure were the cause of visual perception. In this paper, I argue that her “two men” thought experiment in Letter IV is aimed at a different goal: to show the explanatory potency of her account. First, I connect Cavendish’s view of visual perception as “patterning” to the “two men” thought experiment in Letter (...) IV. Second, I provide a potential reply on Hobbes’s behalf that appeals to physiological differences between perceivers’ sense organs, drawing upon Hobbes’s optics in De homine. Third, I argue that such a reply would misunderstand Cavendish’s objective of showing the limited explanatory resources available in understanding visual perception as pressing when compared to her view of visual perception as patterning. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:Journal of the History of Ideas 63.3 (2002) 465-481 [Access article in PDF] The Physiology of Political Economy: Vitalism and Adam Smith's Wealth of Nations Catherine Packham The Scottish Enlightenment has been described as uniting a concern with the origins and foundations of knowledge with a preoccupation with the useful application of knowledge in schemes of practical improvement. 1 Adam Smith's Inquiry into the Nature and Causes of (...) the Wealth of Nations, which combines a theoretical account of political economy with specific proposals on politico-economic matters, might seem to exemplify such a characterization. For some commentators at the time of its publication, however, Smith's lack of practical experience in the field of trade disqualified any claims he might make to authoritative knowledge. Sir John Pringle, for instance, military surgeon and friend of Smith's, thought that a man "who had never been in trade could not be expected to write well on the subject"; and while Dr. Johnson repudiated this, suggesting that all that was necessary was "extensive views," Pringle's opinion was not unusual. 2 Such objections, interrogating the very basis of Smith's expertise, reiterate, in the context of his work, the same kinds of questions regarding knowledge's provenance which preoccupied his age, and which were indeed addressed by Smith himself. Smith's own account of the formation of philosophical knowledge rests not on the authority of experience but on the role of the imagination; he understood systematic knowledge as an imaginative "machine" or work of fancy created to please and soothe a mind disturbed by phenomena which are observed but unexplained. 3 Smith's account of philosophical [End Page 465] knowledge, in which he would include his own Wealth of Nations, suggests that his own expertise should be judged not on the extent of his personal experience of the matters discussed but on the explanatory power and pleasurable nature of the system which he outlines. With its emphasis on the work of the philosophical imagination, his account also suggests that some of the sources for that system might be somewhat unexpected, a suggestion which this paper will pursue.Such questions concerning the genesis and formation of the new discourse of political economy instituted by Wealth of Nations have recurred in our own time, informing some of the more illuminating of recent work on Smith. Rejecting a tradition which assesses the significance of Wealth of Nations in terms of its anticipation of modern economic analysis, revisionist historians of political and economic thought have, since the late 1970s, offered more contextualist accounts of the work, tracing the relations between Smith's moral and economic philosophy and the contemporary discourses of natural jurisprudence and civic humanism. Other commentators have borrowed from literary scholarship to examine the textual and discursive conventions through which Smith's writings construct and sustain their meanings. 4 Such work has given a new emphasis to the textual and discursive nature of Smith's work as a means to understand its derivation, sources, and influences; it has replaced an older perception of Smith as inspired prophet-founder of the new political economy with an effort to interpret his work in the context of other, adjacent and contemporary forms of inquiry. Collectively, such work highlights the varied and disparate discourses which informed Smith's thinking on economic and other matters and seeks to understand how the complex and diverse forms of interaction with and assimilation of aspects of these philosophical and other discourses may have contributed to the formation of Smith's work—and hence, must also figure in our own attempts to read it.This paper, by exploring a strand of physiological language and imagery which runs through Wealth of Nations and considering it in the context of new developments in Scottish physiological research in the middle decades of the eighteenth century, also seeks to understand Smith's work by examining its relations with contemporary philosophical discourse. Where other recent accounts of Wealth of Nations have reassessed its relationship with moral, political and legal discourses, it will... (shrink)

The Perception-Action Model of empathy (PAM) is both sufficiently broad and sufficiently detailed to be able to describe and accommodate a wide range of phenomena – including the apparent “cold-heartedness” or lack of empathy of psychopaths. We show how the physiological, cognitive, and emotional elements of the PAM map onto known and hypothesized attributes of the psychopathic personality.

The paper seeks to refute the idea that physiology can explain at best an organism’s behaviour, outward and inner, but not the conscious experiences that accompany that behaviour. To do so, the paper clarifies the idea by confrontation with an actual example of psychophysical explanation of perceptual experience. This reveals that the idea relies on a prejudice about physiological practice. Then the paper explores some peculiar ways in which this prejudice may survive its refutation. This is to bring out (...) that such explanations of experience as are actually offered by contemporary psychophysics explain nothing less than what they purport to explain; and that these achievements are not, in some peculiar way, more remarkable than equally clever physical explanations of other phenomena. (shrink)

It is proposed that subconscious retro-predictions in conjunction with brain state update cycles are instrumental in the physiological generation of conscious sensations and perceptions, and in all abstract thought. In this paper the hypothesis is supported by conducting a detailed a re-evaluation of the self-referential statements in Set Theory and Formal Logic known as antinomies. This study concludes that the recursive behavior exhibited by abstract enigmas such as "Russell’s Paradox" is analogous to the oscillations typical of bistable perceptual phenomena.

Correspondence should be addressed to David A. Leopold [email protected] the viewing of certain patterns, widely known as ambiguous or puzzle figures, perception lapses into a sequence of spontaneous alternations, switching every few seconds between two or more visual interpretations of the stimulus. Although their nature and origin remain topics of debate, these stochastic switches are generally thought to be the automatic and inevitable consequence of viewing a pattern without a unique solution. We report here that in humans such perceptual (...) alternations can be slowed, and even brought to a standstill, if the visual stimulus is periodically removed from view. We also show, with a visual illusion, that this stabilizing effect hinges on perceptual disappearance rather than on actual removal of the stimulus. These findings indicate that uninterrupted subjective perception of an ambiguous pattern is required for the initiation of the brain-state changes underlying multistable vision.Visual perception involves coordination between sensory sampling of the world and active interpretation of the sensory data. Human perception of objects and scenes is normally stable and robust, but it falters when one is presented with patterns that are inherently ambiguous or contradictory. Under such conditions, vision lapses into a chain of continually alternating percepts, whereby a viable visual interpretation dominates for a few seconds and is then replaced by a rival interpretation. This multistable vision, or 'multistability', is thought to result from destabilization of fundamental visual mechanisms, and has offered valuable insights into how sensory patterns are actively organized and interpreted in the brain1, 2. Despite a great deal of recent research and interest in multistable perception, however, its neurophysiological underpinnings remain poorly understood. Physiological studies have suggested that disambiguation of ambiguous patterns. (shrink)

The main aim of our study was to determinate whether a repeated bout (RB) (vs. first bout [FB]) of sprint interval cycling exercise (SIE) is sufficient to mitigate SIE-induced psychological and physiological biomarker kinetics within 48 h after the exercise. Ten physically active men (age, 22.6 ± 5.2 years; VO2max, 44.3 ± 5.7 ml/kg/min) performed the FB of sprint interval cycling exercise (12 repeats of 5 s each) on one day and the RB 2 weeks later. The following parameters were (...) measured: motor performance (voluntary, electrically induced and isokinetic skeletal muscle contraction torque, and central activation ratio [CAR]); stress markers (BDNF, cortisol, norepinephrine, and epinephrine); inflammatory markers (IL-6, IL-10, and TNF-); metabolic markers (glucose and lactate); muscle and rectal temperature; cycling power output; and psychological perceptions. The average cycling power output and neuromuscular fatigue after exercise did not differ between the FB and RB. There were significant decreases in cortisol and BDNF concentration at 12 h (P < 0.05) and 24 h (P < 0.001) after the FB, respectively. The decrease in cortisol concentration observed 12 h after exercise was significantly greater after the RB (P < 0.05) than after the FB. The immune-metabolic response to the RB (vs. FB) SIE was suppressed and accompanied by lower psychological exertion. Most of the changes in psychological and physiological biomarkers in the FB and RB were closely related to the response kinetics of changes in BDNF concentration. (shrink)

Against recent claims that infants begin with a sense of themselves as distinct selves, I propose that the infant's initial sense of self is still indeterminate and ambiguous, and is only progressively consolidated, beginning with embodied perceptions of others. Drawing upon Merleau-Ponty's phenomenology of perception and Hegel's notion of mutual recognition, and with reference to empirical studies in developmental psychology, I argue that perceiving other persons is significantly different from perceiving inanimate things. Until sufficient motor capacities have developed for (...) exploring and perceptually disambiguating inanimate things, it is only in perceiving others who recognize her that the infant is able to realize herself as a self. As the physiological and behavioural evidence suggests, whereas inanimate things initially captivate and dispossess the young infant, other people return her to herself. This paper lends support to the ideas that humans are ontologically social beings, and that selfhood is socially conditioned rather than given with consciousness. (shrink)

The chapter begins with a sketch of the empirical, theoretical, and philosophical background to nineteenth-century theories of perception, focusing on visual perception. It then considers German sensory physiology and psychology in the nineteenth century and its reception. This section gives special attention to: assumptions about nerve–sensation relations; spatial perception; the question of whether there is a two-dimensional representation in visual experience; psychophysics; size constancy; and theories of colour perception. The chapter then offers a brief look (...) at the interaction between perceptual theory and philosophical issues in epistemology and the metaphysics of mind in Britain and America, focusing on: the notion of a muscle sense; the problem of the external world; and forms of perceptual realism. It ends with an overview of psychological theories of perception in the early twentieth century and the Gestalt reaction, culminating with J. J. Gibson. (shrink)

Hermann von Helmholtz (1821-1894) established results both controversial and enduring: analysis of mixed colors and of combination tones, arguments against nativism, and the analysis of sensation and perception using the techniques of natural science. The paper focuses on Helmholtz’s account of sensation, perception, and representation via “physiological psychology”. Helmholtz emphasized that external stimuli of sensations are causes, and sensations are their effects, and he had a practical and naturalist orientation toward the analysis of phenomenal experience. However, he argued (...) as well that sensation must be interpreted to yield representation, and that representation is geared toward objective representation (the central thesis of contemporary intentionalism). The interpretation of sensation is based on “facts” revealed in experiment, but extends to the analysis of the quantitative, causal relationships between stimuli and responses. A key question for Helmholtz’s theory is the extent to which mental operations are to be ascribed a role in interpreting sensation. (shrink)

This paper highlights the significance of sensory studies and psychophysical investigations of the relations between psychic and physical phenomena for our understanding of the development of the physics discipline, by examining aspects of research on sense perception, physiology, esthetics, and psychology in the work of Gustav Theodor Fechner, Hermann von Helmholtz, Wilhelm Wundt, and Ernst Mach between 1860 and 1871. It complements previous approaches oriented around research on vision, Fechner’s psychophysics, or the founding of experimental psychology, by charting (...) Mach’s engagement with psychophysical experiments in particular. Examining Mach’s study of the senses and esthetics, his changing attitudes toward the mechanical worldview and atomism, and his articulation of comparative understandings of sensual, geometrical, and physical spaces helps set Mach’s emerging epistemological views in the context of his teaching and research. Mach complemented an analytic strategy focused on parallel psychic and physical dimensions of sensation, with a synthetic comparative approach – building analogies between the retina, the individual, and social life, and moving between abstract and sensual spaces. An examination of the broadly based critique that Mach articulated in his 1871 lecture on the conservation of work shows how his historical approach helped Mach cast what he now saw as a narrowly limiting emphasis on mechanics as a phase yet to be overcome. (shrink)

The doctrine of primary qualities is commonly explained as science's return to a former ideal of mathematical intelligibility and as a sacrifice of the notion that we can be certain about what we perceive. According to the standard chronicle modern scientific explanations appeal to geometrically intelligible, yet theoretically imperceptible, particles. This thesis gains plausibility only by suppressing the role of physiological optics in the development of modern science. Descartes presented an original and significant theory of scientific observation in his Dioptrics; (...) according to which, correct perceptual judgments can be made about the spatial qualities of any body, even about bodies so small as to be imperceptible under ordinary circumstances. This theory insured the perceptual accessibility of the spatial qualities of minute bodies but failed, as Locke discovered upon adding solidity to the list of primary qualities, to explain access to non-spatial qualities. As a result of the failure of Descartes' theory of perception to give an adequate account of scientific observation, Locke took the position that solidity or impenetrability cannot ordinarily be perceived, but rather that it can be and is regularly detected by experiment. This Lockean shift from direct perceivability of spatial qualities to the experimental detection of "new" primary qualities marks an important step in the methodological development of early modern science. (shrink)

This article considers categorical perception (CP) as a crucial process involved in all sort of communication throughout the biological hierarchy, i.e. in all of biosemiosis. Until now, there has been consideration of CP exclusively within the functional cycle of perception–cognition–action and it has not been considered the possibility to extend this kind of phenomena to the mere physiological level. To generalise the notion of CP in this sense, I have proposed to distinguish between categorical perception (CP) and (...) categorical sensing (CS) in order to extend the CP framework to all communication processes in living systems, including intracellular, intercellular, metabolic, physiological, cognitive and ecological levels. The main idea is to provide an account that considers the heterarchical embeddedness of many instances of CP and CS. This will take me to relate the hierarchical nature of categorical sensing and perception with the equally hierarchical issues of the “binding problem”, “triadic causality”, the “emergent interpretant” and the increasing semiotic freedom observed in biological and cognitive systems. (shrink)

The understanding of perception advanced by Aristotle and Theophrastus is largely physiological in character, describing the mechanism of perception and its resulting epistemic value. Like Epicurean views, theirs is not a theory of sensory ideas. The Stoics develop a competing approach to perception that describes sensory phenomena in terms of conceptual, linguistic representations.

Professor Wilhelm Blasius, physiologist at Giessen in West Germany, has written a book "Probleme der Lebensforschung" (Verlag Rombach, Freiburg 1973) which - I understand - is to be published in an English version. To me it has been of interest as an orientation in a world of traditional German thinking, best known from Goethe's natural philosophy of perceptible "Ur­ bilder", which perhaps in English could be rendered descriptively by calling it an inner vision of further irre­ ducible totalities. It is (...) in contemporary language a kind of intuitive 'holistic' insight which represents understanding different from that of natural science. The latter is devoted to the study of causal chains, is largely experimental and in its aim ultimately 'reduc­ tionist' -to use another modern term. Goethe's approach is reincarnated in the "Wesenslehre" of the late Ludwig Klages (1872-1956) and in the thinking of Carl Gustav Caruso To Klages the perceived image alone is the meaning of everything in this world and in this sense he is the advocate of a psychological phenom­ enology that is an end in itself. Originally trained as a chemist Klages soon turned to philosophy and de­ veloped a system of concepts supposed to give a deeper insight into the essence of life than did the endless causal chains of natural science. Blasius makes much use of the concepts of this philosopher, in particular his ideas on 'polarities'. (shrink)

Generalized Quantum Theory seeks to explain and predict quantum-like phenomena in areas usually outside the scope of quantum physics, such as biology and psychology. It draws on fundamental theories and uses the algebraic formalism of quantum theory that is used in the study of observable physical matter such as photons, electrons, etc. In contrast to quantum theory proper, GQT is a very generalized form that does not allow for the full application of formalism. For instance neither a commutator, such as (...) Planck’s constant, nor any additive operations are defined, which precludes the usage of a full Hilbert-space formalism. But it is a formalized phenomenological theory that is applicable whenever the core element of a quantum theory needs to be captured, namely in the presence of incompatible or non-commuting operations. As a consequence, it also predicts nonlocal, generalized entanglement correlations in systems other than proper quantum systems. In this paper we summarize the specific scientific evidence relating to the quantum-like mental, behavioral and physiological nonlocal correlations. Such non-local, generalized entanglement correlations are expected, both in space and time, between subsystems of a larger system, whenever observables pertaining to the global system are incompatible or complementary to observables pertaining to subsystems, as predicted by GQT. The result is a coherent explanation of a significant amount of controversial and seemingly weird occurrences that cannot be explained by classical physical laws. This review also offers a new perspective of the human mind’s potential. (shrink)

In this work I reject the contention that there is a perceptual stage which is devoid of contributions from the agent's cognitive framework. This contention is expressed in two different noncognitive views of perception. The traditional sensory core view which has prevailed since the seventeenth century; it claims that there is a stage of pure sensory core which precedes the interpretive percepts . The recent ecological approach whose main representative is J. J. Gibson; it claims that not only a (...) certain perceptual stage, but the whole perceptual process, is devoid of cognitive contributions. Before I deal with these views, I discuss the basic features of cognition in general. ;Cognition is concerned with the establishment of relations and order; it is a purposive placing of a cognized object into a meaningful order. Cognition begins with modifying a given order for the purpose of making it fit into a given meaningful framework. Throughout the work I show that, contrary to the aforementioned noncognitive views, perception fulfills this depiction of cognition. ;In the discussion of the sensory core view, I illustrate its main assumptions in various philosophical writings, and then indicate main reasons for its appearance in the seventeenth century. These reasons stem from the intermediate role sensation was supposed to have in the mental-physical gap. Sensations were considered to be primitive mental entities with physical causes; their physical origin prevents them from containing complex mental features such as the cognitive ones, and, thus, they are regarded as pure. This stage of pure sensation was postulated primarily out of theoretical considerations. Those did not coincide with the empirical and phenomenological description of that stage; hence, the empirical characterization and the phenomenological status of that stage were constantly modified. The various suggestions for describing that stage are examined and criticized from both empirical and theoretical respects. The empirical evidence presented indicates that there is no qualitative difference between perceiving what is regarded as pure sensations and what is regarded as inferential perceptions. The theoretical criticism points out that the assumption regarding pure sensation is not necessary for an adequate explanation of perception; and, since it has no empirical grounds, it is superfluous. ;After rejecting the sensory core view, I examine the ecological approach. This view rejects the traditional sensation-perception distinction and contends that we do not have to assume the existence of cognitive activities that interpret meaningless sensations into meaningful perceptions, since the perceiver directly encounters meaningful features. I claim that this solution is similar to Kant's approach, and, therefore, it has to pay a price which is similar to that which Kant pays, viz. the relational nature of the perceptual environment. The neglect of this feature results in unsolvable difficulties in central notions of the ecological approach. ;I conclude the work by suggesting a crude outline for approaching perception; in many respects it is close to Aristotle's view. I contend that causal explanations of the physiological processes cannot wholly explain perceiving; these processes are necessary supportive bases for perceiving and not the causes which precede and produce it. Accordingly, we should not assume the existence of separate percepts in the agent's head. The cognitive system is an integral part of the perceptual system; hence, perception may be conceived of as direct understanding. (shrink)

Contributors to this book include key theorists and practitioners from media theory, Native Science, bio-media and sound art, philosophy, art history and design informatics. Collectively, they examine the becoming-technique of animal-human- machinic perceptibilities; and micro-perceptions that lie beneath the threshold of known perceptions yet create energetic vibrations. Who, what, and where perceives, and how? What are the sedimentations, inscriptions and axiologies of animal, human and machinic perceptions? What are their perceptibilities? Deleuze uses the word 'visibilities' to indicate that visual (...) class='Hi'>perception isn't just a physiological given but cues operations productive of new assemblages. Perceptibilities are, by analogy, spatio- temporal, geolocative, kinaesthetic, audio-visual, and haptic operations that are always already memory. In the case of strong inscriptions, they are also epigenetic events. The contributors show distributed perception to be a key notion in addressing the emergence and persistence of plant, animal, human and machine relations. An invaluable reference for students and scholars in a range of areas including Media Theory, Sociology, Philosophy, Art and Design. (shrink)

Rafael Malach is currently a professor in the department of Neurobiology at the Weizmann Institute in Israel. His current research is aimed at understanding how the neuronal circuitry in the human brain translates a stream of sensory stimuli into meaningful perception. Rafael Malach received his PhD in physiological optics from UC Berkeley and did his post-doctorate research at MIT. Originally doing research on the organization of neuronal connections in the primate brain, his focus has recently shifted to the study (...) of the human cerebral cortex using fMRI. Professor Malach has begun this research at Massachusetts General Hospital, exploring a new object-related region called the lateral occipital complex. Since then he expanded this research, studying the human visual cortex using a variety of methods, including adaptation paradigms, backward masking, and more recently naturalistic stimuli--all aimed at deciphering the intriguing link between perceptual experience and brain activity. (shrink)

This paper deals with Ludwik Fleck’s theory of thought styles and Michael Polanyi’s theory of tacit knowledge. Though both concepts have been very influential for science studies in general, and both have been subject to numerous interpretations, their accounts have, somewhat surprisingly, hardly been comparatively analyzed. Both Fleck and Polanyi relied on the physiology and psychology of the senses in order to show that scientific knowledge follows less the path of logical principles than the path of accepting or rejecting (...) specific conventions, where these may be psychologically or sociologically grounded. It is my aim to show that similarities and differences between Fleck and Polanyi are to be seen in the specific historical and political context in which they worked. Both authors, I shall argue, emphasized the relevance of perception in close connection to their respective understanding of science, freedom, and democracy. (shrink)